ICD-10-CM · Chapter 6 · G00-G99
G44 Other headache syndromes
Excludes 1 (cannot be coded together)
- headache NOS (R51.9)
Excludes 2 (not included here)
- atypical facial pain (G50.1)
- headache due to lumbar puncture (G97.1)
- migraines (G43.-)
- trigeminal neuralgia (G50.0)
Subcodes
Each subcode links to a detail page with full clinical annotations.
| Code | Description | Billable |
|---|---|---|
| G44..0 | Cluster headaches and other trigeminal autonomic cephalgias (TAC) | No |
| G44..00 | Cluster headache syndrome, unspecified | No |
| G44..001 | Cluster headache syndrome, unspecified, intractable | Yes |
| G44..009 | Cluster headache syndrome, unspecified, not intractable | Yes |
| G44..01 | Episodic cluster headache | No |
| G44..011 | Episodic cluster headache, intractable | Yes |
| G44..019 | Episodic cluster headache, not intractable | Yes |
| G44..02 | Chronic cluster headache | No |
| G44..021 | Chronic cluster headache, intractable | Yes |
| G44..029 | Chronic cluster headache, not intractable | Yes |
| G44..03 | Episodic paroxysmal hemicrania | No |
| G44..031 | Episodic paroxysmal hemicrania, intractable | Yes |
| G44..039 | Episodic paroxysmal hemicrania, not intractable | Yes |
| G44..04 | Chronic paroxysmal hemicrania | No |
| G44..041 | Chronic paroxysmal hemicrania, intractable | Yes |
| G44..049 | Chronic paroxysmal hemicrania, not intractable | Yes |
| G44..05 | Short lasting unilateral neuralgiform headache with conjunctival injection and tearing (SUNCT) | No |
| G44..051 | Short lasting unilateral neuralgiform headache with conjunctival injection and tearing (SUNCT), intractable | Yes |
| G44..059 | Short lasting unilateral neuralgiform headache with conjunctival injection and tearing (SUNCT), not intractable | Yes |
| G44..09 | Other trigeminal autonomic cephalgias (TAC) | No |
| G44..091 | Other trigeminal autonomic cephalgias (TAC), intractable | Yes |
| G44..099 | Other trigeminal autonomic cephalgias (TAC), not intractable | Yes |
| G44..1 | Vascular headache, not elsewhere classified | Yes |
| G44..2 | Tension-type headache | No |
| G44..20 | Tension-type headache, unspecified | No |
| G44..201 | Tension-type headache, unspecified, intractable | Yes |
| G44..209 | Tension-type headache, unspecified, not intractable | Yes |
| G44..21 | Episodic tension-type headache | No |
| G44..211 | Episodic tension-type headache, intractable | Yes |
| G44..219 | Episodic tension-type headache, not intractable | Yes |
| G44..22 | Chronic tension-type headache | No |
| G44..221 | Chronic tension-type headache, intractable | Yes |
| G44..229 | Chronic tension-type headache, not intractable | Yes |
| G44..3 | Post-traumatic headache | No |
| G44..30 | Post-traumatic headache, unspecified | No |
| G44..301 | Post-traumatic headache, unspecified, intractable | Yes |
| G44..309 | Post-traumatic headache, unspecified, not intractable | Yes |
| G44..31 | Acute post-traumatic headache | No |
| G44..311 | Acute post-traumatic headache, intractable | Yes |
| G44..319 | Acute post-traumatic headache, not intractable | Yes |
| G44..32 | Chronic post-traumatic headache | No |
| G44..321 | Chronic post-traumatic headache, intractable | Yes |
| G44..329 | Chronic post-traumatic headache, not intractable | Yes |
| G44..4 | Drug-induced headache, not elsewhere classified | No |
| G44..40 | Drug-induced headache, not elsewhere classified, not intractable | Yes |
| G44..41 | Drug-induced headache, not elsewhere classified, intractable | Yes |
| G44..5 | Complicated headache syndromes | No |
| G44..51 | Hemicrania continua | Yes |
| G44..52 | New daily persistent headache (NDPH) | Yes |
| G44..53 | Primary thunderclap headache | Yes |
| G44..59 | Other complicated headache syndrome | Yes |
| G44..8 | Other specified headache syndromes | No |
| G44..81 | Hypnic headache | Yes |
| G44..82 | Headache associated with sexual activity | Yes |
| G44..83 | Primary cough headache | Yes |
| G44..84 | Primary exertional headache | Yes |
| G44..85 | Primary stabbing headache | Yes |
| G44..86 | Cervicogenic headache | Yes |
| G44..89 | Other headache syndrome | Yes |
Plain-language terms for this code
The following entries in the US Medical Glossary correspond to ICD-10-CM category G44:
- Cluster Headache — Cefalea en racimos
- Tension Headache — Cefalea tensional
Last reviewed: September 2026